PC Meter

On screen processor & memory usage meters are cool, but do you know
what's even cooler? The real thing! In 2013 I built my first "PC Meter"
which displays CPU load & memory usage on two analog meters using an
Arduino microcontroller to drive them. The numbers are fed to the device
from a Windows application I developed in C#.Net. Here's a video of it in
action:

For more details on the various parts of the project, follow the links in
the menu at the top. There is also a link to download a ZIP file
containing all the source code and related files.